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1

why does my while loop never end?

puts 'Please enter a number:'
number = gets.chomp.to_i
while number != ''
  if number > 0
    puts 'You have entered a number greater than 0'
  end
  puts 'Please enter a number'
  number = gets.chomp.to_i
end
puts 'Goodbye!'

···

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Posted via http://www.ruby-forum.com/.

2

# why does my while loop never end?

check your while condition, pls.

# puts 'Please enter a number:'
# number = gets.chomp.to_i

number is an integer

# while number != ''

then you're comparing it w a string

···

From: Imraan Moolla [mailto:imoolla@gmail.com]

3

Hello,

Is there any other source where I could download the gem
activerecord-sybase-adapter.

I have been trying to access http://gems.rubyonrails.org all day, which
hosts these adapters according to
http://weblog.rubyonrails.org/2007/10/1/adapter-gems-available but to no
avail.

http://gems.rubyforge.net didn't yield anything either.

I am upgrading to rails 2.0 and this is holding me back.

Many Thanks,
Aman

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4

Because gets.chomp.to_i will never be an empty string ('').

''.to_i
  --> 0

nil.to_i
  --> 0

Regards,
Nicolai

5

Hi Imraan,

why does my while loop never end?

puts 'Please enter a number:'
number = gets.chomp.to_i

   casting to an integer

while number != ''

   this is a string
   (while number > 0)

  if number > 0
    puts 'You have entered a number greater than 0'
  end
  puts 'Please enter a number'
  number = gets.chomp.to_i

   casting to an integer

end
puts 'Goodbye!'

cheers,

···

On Mon, 10 Dec 2007 04:55:51 -0500 Imraan Moolla <imoolla@gmail.com> wrote:

--
Mark

6

Thank you all. I understand now! :slight_smile:

Mark Woodward wrote:

···

Hi Imraan,

On Mon, 10 Dec 2007 04:55:51 -0500 > Imraan Moolla <imoolla@gmail.com> wrote:

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